Insemination tube syringe



1955 E. R. CARLSON INSEMINATION TUBE SYRINGE Filed Feb. 1, 1954 W///// Y, Q

INVENTOR ATTORNEYS United States Patent INSEMINATION TUBE SYRINGE Edwin R. Carlson, Waupun, Wis.

Application February 1, 1954, Serial No. 407,303 4 Claims. (or. 128-235) This invention relates to a combined insemination tube and syringe, the primary object of the invention being to provide a device of this character including a syringe barrel which is readily applicable and slidable over one end of an insemination tube for controlling the passage of fluid into and from the insemination tube, in such a way as to insure against the entrance of air into the syringe barrel operating over one end of the insemination tube.

Another object of the invention is to provide a syringe barrel and a rubber adapter into which one end of the syringe barrel extends and is secured, the adapter being so constructed and arranged that it will cause a circumferential pressure upon the insemination tube to produce and insure an air-tight seal between the insemination tube and syringe barrel.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts, hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawing:

Figure l is a side elevational view illustrating an insemination tube equipped with a syringe barrel and adapter, constructed in accordance with the invention.

Fig. 2 is a longitudinal sectional view therethrough.

Fig. 3 is a sectional view taken on line 3-3 of Fig. 2.

Fig. 4 is an exploded view illustrating one end of an insemination tube, adapter, and one end of a syringe barrel, the various elements being shown in section.

Referring to the drawing in detail, an insemination tube is indicated by the reference character 5, which tube is provided with rounded ends 6, as better shown by Fig. 2 of the drawing, the tube being constructed preferably of translucent plastic material.

The reference character 7 indicates a syringe barrel which is constructed preferably of glass and formed with an outwardly flared end 8, which is fitted in a groove 9 formed in the bore of the rubber adapter 10, whereby the rubber adapter 10 is secured to the syringe barrel to move therewith.

As better shown by Fig. 4 of the drawing, the rubber adapter is provided with a bore formed with an enlarged end 11 and a contracted end 12, the inner surface of the contracted end 12 being formed with annular ribs 13 which are tapered towards their inner edges "ice providing a plurality of gripping sections that tightly grip the insemination tube 5, where the contracted end of the adapter 10 is positioned. It will, of course, be understood that the size of the contracted end of the adapter is appreciably smaller than the diameter of the insemination tube over which it is positioned, to the end that because of the difference in diameter of the bore of the adapter into which the syringe barrel 7 extends, a circumferential pressure will be set up between the annular ribs 13 and insemination tube, to provide an airtight seal between the syringe barrel and insemination tube so that upon operation of the syringe barrel over the insemination tube, the required suction and pressure will be provided to insure the operation of the device as a syringe.

One end of the bore of the rubber adapter 10 is beveled at 14 so that the curved end of the insemination tube may pass readily into the bore of the adapter 10 to be gripped by the tapered edges of the annular ribs 13.

From the foregoing it will be seen that due to the construction of the syringe barrel and adapter, an insemination tube may be readily converted into a syringe for drawing fluid thereinto and ejecting fluid therefrom, eliminating any possibility of air entering the insemination tube.

Having thus described the invention, what is claimed is:

1. A combined insemination tube and syringe, comprising a tubular section, a syringe barrel having an outwardly flared end slidably fitted over said tube, an adapter having a bore extending therethrough, said bore having an enlarged end and a contracted end and having an internal annular groove, the outwardly flared end of said syringe barrel being fitted within the enlarged end of said adapter with the flared portion thereof disposed in said annular groove, securing the adapter to said syringe barrel, and a plurality of annular ribs formed within the contracted end of the adapter engaging the outer surface of the insemination tube pro- ;iding an air-tight fit between said tube and said syringe arre 2. A combined insemination tube and syringe comprising a tubular section having rounded ends, a syringe barrel fitted over one end of said tube in contact therewith, a rubber adapter having a bore extending therethrough, fitted over said insemination tube and to which said syringe barrel is secured to move therewith, and a series of annular ribs between the end of said syringe barrel disposed within the adapter and one end of the adapter, said ribs contacting said insemination tube providing an air-tight fit between said adapter and said insemination tube.

3. The subject matter as claimed in claim 1, and said bore having a beveled end for positioning over the insemination tube.

4. The subject matter as claimed in claim 1, and said annular ribs being tapered towards their inner ends.

References Cited in the file of this patent UNITED STATES PATENTS Dolmatch Feb. 24, 1948 

